Shimano Shimano Ultegra SM-BB72-41B Bottom Bracket

Shimano Ultegra SM-BB72-41B Bottom Bracket

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Please note that components are subject to change and may not be exactly as pictured.


Shimano spends considerable time making certain that it's bottom brackets use only the best, silky-smooth bearings, advanced sealing, and high manufacturing tolerances.

Such is the case with its new Ultegra SM-BB72-41B PressFit Bottom Bracket design. Where a typical road bike has a 68 or 70mm bottom bracket shell width, a BB86-equipped frame has a shell that measures 86.5mm wide. A BB86 shell lacks internal threads and has a 41mm inside diameter.



Highlights

1 - Optimum power transfer

2 - DURA-ACE proven 4-arm design:Equal stiffness and lighter weight

3 - 14 g lighter weight and half the friction of the SM-BB6700, while maintaining the same durability

Specifications

Weight: 69g

Variety choice of gearing: 53-39T/52-36T/50-34T/46-36T

Weight: 77 g (SM-BBR60) 69 g (SM-BB72-41B)


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